/*
 * Copyright (C) 2015-2018 EPAM Systems
 *
 * This file is part of Indigo ELN.
 *
 * Indigo ELN is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Indigo ELN is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Indigo ELN.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

function indigoSort() {
    return {
        restrict: 'A',
        scope: {
            indigoSort: '=',
            isAscending: '=',
            onSort: '&'
        },
        controller: IndigoSortController,
        controllerAs: 'vm',
        bindToController: true
    };

    function IndigoSortController() {
        var vm = this;

        $onInit();

        function $onInit() {
            vm.sort = sort;
        }

        function sort(field) {
            if (field !== vm.indigoSort) {
                vm.isAscending = true;
            } else {
                vm.isAscending = !vm.isAscending;
            }

            vm.indigoSort = field;
            vm.onSort({predicate: field, isAscending: vm.isAscending});
        }
    }
}

module.exports = indigoSort;

